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Stochastic feedback and the regulation of biological rhythmsWe propose a general approach to the question of how biological rhythms spontaneously self-regulate, based on the concept of "stochastic feedback". We illustrate this approach by considering at a coarse-grained level the neuroautonomic regulation of the heart rate. The model generates complex dynamics and successfully acounts for key characteristics of cardiac variability, including the l/f power spectrum, the functional form and scaling of the distribution of variations, and correlations in the Fourier phases indicating nonlinear dynamics.
Document ID
20040088954
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nunes Amaral, L. A.
(Boston University MA 02215, United States)
Goldberger, A. L.
Stanley, H. E.
Date Acquired
August 21, 2013
Publication Date
August 15, 1998
Publication Information
Publication: Europhysics letters
Volume: 43
Issue: 4
ISSN: 0295-5075
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: MH-54081
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Cardiopulmonary
Non-NASA Center

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